Riverbend Steam Station

Riverbend Steam Station is a coal-fired power station owned and operated by Duke Energy near Mount Holly, North Carolina.

Plant Data

 * Owner/Parent Company: Duke Energy
 * Plant Nameplate Capacity: 466 MW (Megawatts)
 * Units and In-Service Dates: unit 4: 100 MW (1952), unit 5: 100 MW (1952), unit 6: 133 MW (1954), unit 7: 133 MW (1954)
 * Location: 175 Steamplant Station, Mount Holly, NC 28120
 * GPS Coordinates: 35.357778, -80.97
 * Coal Consumption:
 * Coal Source:
 * Number of Employees:

Emissions Data

 * 2006 CO2 Emissions: 2,390,418 tons
 * 2006 SO2 Emissions:
 * 2006 SO2 Emissions per MWh:
 * 2006 NOx Emissions:
 * 2005 Mercury Emissions:

Death and disease attributable to fine particle pollution from Riverbend Steam Station
In 2010, Abt Associates issued a study commissioned by the Clean Air Task Force, a nonprofit research and advocacy organization, quantifying the deaths and other health effects attributable to fine particle pollution from coal-fired power plants. Fine particle pollution consists of a complex mixture of soot, heavy metals, sulfur dioxide, and nitrogen oxides. Among these particles, the most dangerous are those less than 2.5 microns in diameter, which are so tiny that they can evade the lung's natural defenses, enter the bloodstream, and be transported to vital organs. Impacts are especially severe among the elderly, children, and those with respiratory disease. The study found that over 13,000 deaths and tens of thousands of cases of chronic bronchitis, acute bronchitis, asthma, congestive heart failure, acute myocardial infarction, dysrhythmia, ischemic heart disease, chronic lung disease, and pneumonia each year are attributable to fine particle pollution from U.S. coal plant emissions. These deaths and illnesses are major examples of coal's external costs, i.e. uncompensated harms inflicted upon the public at large. Low-income and minority populations are disproportionately impacted as well, due to the tendency of companies to avoid locating power plants upwind of affluent communities. To monetize the health impact of fine particle pollution from each coal plant, Abt assigned a value of $7,300,000 to each 2010 mortality, based on a range of government and private studies. Valuations of illnesses ranged from $52 for an asthma episode to $440,000 for a case of chronic bronchitis.

Table 1: Death and disease attributable to fine particle pollution from Riverbend Steam Station
Source: "Find Your Risk from Power Plant Pollution," Clean Air Task Force interactive table, accessed February 2011

Proposed coal unit closures
In September 2010, Duke Energy said it might close seven coal-fired units at its Carolinas power plants within five years as environmental regulations intensify. It may retire by 2015 all coal-fired units for which it's not economical to install sulfur dioxide controls called scrubbers. That would increase by 890 megawatts the coal plants Duke had planned to retire in 2009. The retired units would be at Duke's Riverbend Steam Station in Gaston County, Buck Steam Station in Rowan County, and Lee Steam Plant in Anderson County, S.C. Duke said it might convert Lee from coal to natural gas fuel.

Duke has already agreed to retire 800 megawatts of older coal units as part of an N.C. permit to build a new 825-megawatt unit under construction at the Cliffside Plant in Rutherford County. That will shutter four old units at Cliffside, two at Buck, three at Dan River Steam Station, and two at Riverbend.

Duke's projections show the amount of its electricity generated with coal falling from 42 percent in 2011 to 29 percent in 2030. The share from nuclear power, in contrast, stays steady at 51 percent. The utility continues to plan for a new nuclear plant, its first since the mid-1980s, to open in Gaffney, S.C., in about 2020. Duke is also building two gas-fired power plants, to open at Buck in late 2011 and at Dan River in late 2012.

Renewal plant permit approved, with modifications
On Jan. 18, 2011, renewal permits for Duke Energy's Marshall Steam Station, Riverbend Steam Station, and G.G. Allen Steam Plant were approved by the North Carolina Department of Environment and Natural Resources division of water quality. Riverbend and Allen steam stations in Gaston County.The National Pollution Discharge Elimination System permits were renewed with some changes for the coal-fired power facilities that allow the discharge of treated wastewater to the Catawba River Basin, according to information from the state Department of Environment and Natural Resources.

According to the department, the changes include:
 * Quarterly monitoring for mercury was added to outfall from the coal ash ponds at the Riverbend Steam Station. This will establish a monitoring plan for mercury, selenium and arsenic that is consistent for all three permits.
 * Fish tissue monitoring, at least once per permit cycle, has been added to all three permits.
 * Semi-annual in-stream monitoring was added for arsenic, selenium, mercury, chromium, lead, cadmium, copper, zinc and total dissolved solids. The monitoring is to occur upstream and downstream of ash pond outfalls at all three facilities.
 * Liquid coal ash storage structures shall meet the dam design and safety requirements according to the state administrative code.

The permits also require Duke to install groundwater monitoring wells and to comply with groundwater standards, according to information from the state. While the permits require monitoring, the state didn’t go far enough, according to Catawba Riverkeeper David Merryman: “It’s disturbing to me that the state is allowing the unlimited release of mercury, selenium and arsenic into our waters." Merryman said he plans to look into the option of appealing the state’s decision on the permits.

Coal Waste Site

 * Riverbend Steam Station Primary Pond
 * Riverbend Steam Station Secondary Pond

"High Hazard" Surface Impoundments
Two of Riverbend Steam Station's coal ash surface impoundments are on the EPA's official June 2009 list of Coal Combustion Residue (CCR) Surface Impoundments with High Hazard Potential Ratings. The rating applies to sites at which a dam failure would most likely cause loss of human life, but does not assess of the likelihood of such an event.

Citizen groups

 * Appalachian Voices
 * Asheville Rising Tide
 * Canary Coalition
 * North Carolina Waste Awareness And Reduction Network
 * Sierra Club North Carolina Chapter
 * Southern Environmental Law Center
 * StopCliffside.org
 * Western North Carolina Alliance

Related SourceWatch Articles

 * Existing U.S. Coal Plants
 * North Carolina and coal
 * Duke Energy
 * United States and coal
 * Global warming